Warning & Fatal error after upgrading

Hi,
I just upgraded the plugin and get this warning and fatal error:

Warning: require_once(/inc/dashboard.php) [function.require-once]: failed to open stream: No such file or directory in /home/mysite/public_html/wp/wp-content/plugins/easy-modal/easy-modal.php on line 325

Fatal error: require_once() [function.require]: Failed opening required '/inc/dashboard.php' (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/mysite/public_html/wp/wp-content/plugins/easy-modal/easy-modal.php on line 325

any ideas on this? I fresh intalled the plugin on a local test server and all worked well.

thanks

https://www.ads-software.com/extend/plugins/easy-modal/